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Overview of sheet metal processing
Date of issue：2022-06-24 Number of visits：472 Publishing author：BangBaoWuJin
Sheet metal processing and plastic processing, sometimes the term is derived from the English platemetal, general is a few sheet metal by manually or stamping mould make its produce plastic deformation, forming the desired shape and size, and can be further by welding or a small amount of machining to form more complex parts, such as the chimney is commonly used in family, tin furnace, There are car shells are plate gold pieces.
Sheet metal processing is called sheet metal processing. Specific for example, make chimney, iron bucket, oil tank oil pot, ventilation pipe, elbow size head, day garden place, funnel shape, the main working procedure is cutting, bending buckle edge, bending molding, welding, riveting, need certain geometric knowledge. Sheet metal parts are thin plate hardware, which can be processed by stamping, bending, stretching and other means of parts, a general definition is the thickness of the parts in the process of processing. Corresponding is casting, forging, mechanical processing parts, for example, the car outside the iron shell is sheet metal, stainless steel does a few cabinet is sheet metal.
In general, the three most important steps of sheet metal processing are shear, punching/cutting, and folding.
1.1 The first is blanking (also known as blanking) process. Usually, the workers on site will get the proper size of the part material from the large sheet by cutting through the plate cutter according to the expansion drawing provided by the technical department. In case of a press, the dead zone of the clamp must be considered. After feeding, the worker will mark the material number with a marker on the surface of each piece of material.
(Note: some factories do not have this processing step, directly typesetting on the standard sheet, and then directly stamping/cutting processing.)
1.2 The material is then sent to a CNC punch/cutter for the punching/cutting process. In this process, it is necessary to prepare NC (Numerical Control) code for the machined parts. Now most machine tool manufacturers will provide automatic programming software (domestic manufacturers are almost with foreign such software company cooperation, OEM sales, so they do not have their own software research and development team), so greatly convenient programming engineers. The factors that the stamping/cutting programmer should consider are plate utilization, cutting tools, efficiency, accuracy and so on. After the stamping/cutting is complete, the parts are removed from the micro connection and then sent to the bending machine for bending.
1.3 In the bending process, the main consideration is tool selection, bending sequence, bending compensation, bending interference, etc. Usually have bent stochastic programming software sales, but most domestic CNC bending machine or manual programming, too often rely on the experience of the Lao shifu, on the other hand, domestic manufacturing process requirements, there is still a gap relative to foreign, and efficiency has not improved, the performance of the CNC bending machine did not play to the extreme.
1.4 Finally, according to the situation of the product, welding, grinding, painting, assembly, packaging and other procedures may be carried out, which will not be described here.
Generally speaking, in recent years, sheet metal industry can be described as rapid development. There are several reasons for this.
2.1 Increased demand for production capacity. China is becoming more and more international processing and manufacturing center, coupled with the continuous increase of foreign investment, metal processing capacity demand is increasing, and the metal processing industry electrical control box, machine shell and other generally are sheet metal parts, so sheet metal processing capacity demand is also increasing.
2.2 Low machining accuracy requirements, easy to use. In terms of gold processing, the accuracy in a few silk is very common, and the complexity of the process is relatively high, and even some parts of the process up to dozens of. Therefore, gold processing enterprises usually need a variety of mechanical equipment to meet different technological requirements. And sheet metal punching accuracy is generally ±0.1mm or so, bending accuracy can generally reach ±0.5mm, so relative to hardware processing, the accuracy is much lower.
Sheet metal processing is called sheet metal processing. Specific for example, make chimney, iron bucket, oil tank oil pot, ventilation pipe, elbow size head, day garden place, funnel shape, the main working procedure is cutting, bending buckle edge, bending molding, welding, riveting, need certain geometric knowledge. Sheet metal parts are thin plate hardware, which can be processed by stamping, bending, stretching and other means of parts, a general definition is the thickness of the parts in the process of processing. Corresponding is casting, forging, mechanical processing parts, for example, the car outside the iron shell is sheet metal, stainless steel does a few cabinet is sheet metal.
In general, the three most important steps of sheet metal processing are shear, punching/cutting, and folding.
1.1 The first is blanking (also known as blanking) process. Usually, the workers on site will get the proper size of the part material from the large sheet by cutting through the plate cutter according to the expansion drawing provided by the technical department. In case of a press, the dead zone of the clamp must be considered. After feeding, the worker will mark the material number with a marker on the surface of each piece of material.
(Note: some factories do not have this processing step, directly typesetting on the standard sheet, and then directly stamping/cutting processing.)
1.2 The material is then sent to a CNC punch/cutter for the punching/cutting process. In this process, it is necessary to prepare NC (Numerical Control) code for the machined parts. Now most machine tool manufacturers will provide automatic programming software (domestic manufacturers are almost with foreign such software company cooperation, OEM sales, so they do not have their own software research and development team), so greatly convenient programming engineers. The factors that the stamping/cutting programmer should consider are plate utilization, cutting tools, efficiency, accuracy and so on. After the stamping/cutting is complete, the parts are removed from the micro connection and then sent to the bending machine for bending.
1.3 In the bending process, the main consideration is tool selection, bending sequence, bending compensation, bending interference, etc. Usually have bent stochastic programming software sales, but most domestic CNC bending machine or manual programming, too often rely on the experience of the Lao shifu, on the other hand, domestic manufacturing process requirements, there is still a gap relative to foreign, and efficiency has not improved, the performance of the CNC bending machine did not play to the extreme.
1.4 Finally, according to the situation of the product, welding, grinding, painting, assembly, packaging and other procedures may be carried out, which will not be described here.
Generally speaking, in recent years, sheet metal industry can be described as rapid development. There are several reasons for this.
2.1 Increased demand for production capacity. China is becoming more and more international processing and manufacturing center, coupled with the continuous increase of foreign investment, metal processing capacity demand is increasing, and the metal processing industry electrical control box, machine shell and other generally are sheet metal parts, so sheet metal processing capacity demand is also increasing.
2.2 Low machining accuracy requirements, easy to use. In terms of gold processing, the accuracy in a few silk is very common, and the complexity of the process is relatively high, and even some parts of the process up to dozens of. Therefore, gold processing enterprises usually need a variety of mechanical equipment to meet different technological requirements. And sheet metal punching accuracy is generally ±0.1mm or so, bending accuracy can generally reach ±0.5mm, so relative to hardware processing, the accuracy is much lower.
